"There's no use crying over spilled milk."意思

cry over spilt milk=cry over spilled milk
意为:后悔无益；既往不咎；于事无补。
例子：
1.After the baby tore up Sue's picture book,Sue'smother told her there was no use crying over spilled milk（小娃娃撕碎了苏的图书后，苏的母亲告诉苏现在哭也于事无补）
2.You have lost the game but don't cry over spilt milk.(这场比赛你已经输了，不必再做于事无补的抱怨了)

覆水难收